IST ProEar Diving Mask – User’s manual
Introduction
Congratulations! You are now the owner of the revolutionary IST ProEar mask. As it offers an entirely different concept
to diving safety and comfort, the full benefits of the ProEar may take.one or two dives of getting used to. There are 3
models available to choose from: ME7 single lens mask (clear blue), ME55 twin lens mask (all black) and the original
twin lens ProEar ME80 (carbon fibre pattern or clear blue). All are equipped with the same silicone ear cups, equalisation
tubes and the twin lens models can also accommodate IST specially made optical lenses (item no.: OL55 and OL80).
Excellent for diving as well as snorkelling, the benefits of the ProEar mask are:
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Improving comfort and preventing painful ear problems while diving
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Improving hearing and sense of direction underwater
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Simplifying pressure equalisation
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Increase warmth around the ears by insulating them from water
We recommend you to try this unique mask in confined water until you are familiar and comfortable with it.
Preparation
Prior to using your new mask for the first time, thoroughly clean the mask lens(es) with a non-abrasive liquid detergent or
toothpaste to remove any production residue, and then rinse with fresh water.
Wearing the mask
When putting on the mask, it is preferable to hold the ear cups in the palm of each hand as you gently slip the whole mask
over your head. Do not use excessive force to pull or it may break apart. Also make sure:
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As little hair gets into the silicone ear skirts and mask skirt as possible.
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Both ears are entirely covered.
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The seal is not bent or deformed so it becomes leaky.
It would be helpful to have your diving buddy to check for you.
Checking the seal
After putting on the mask, tighten the strap slightly and check the seal by inhaling through the nose. The mask should pull
in toward your face as a vacuum is formed. The ear cups should also respond with the vacuum as the silicone cups
collapse slightly inward.
Do not
enter the water if there is nay leakage; if it is leaking
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Check all silicone skirts (mask and ear cups) are lying flat and there are no kinks.
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See if there is any hair or object trapped between the skirts and skin.
Adjusting the strap
